Fish-screen.



H. I. SHOTWELL.

FISH SCREEN.

APPLIOATION FILED SEPT. 2. 191s.

1,080,488, Patented Dec. 2, 1913.

2 SHEETS-SHEET l.

:inventor witnesses attorneys COLUMBIA PLANOORAPN co.. WASHINGTON. D, CV

H. I. SHOTWELL. FISH SCREEN.

APPLIOATION FILED SEPT. z, 1913.

Patented Dec 2, 1913 2 SHBETS-BHEBT 2 n n l l /0 l l nventor L Snowo Qttomegs witnesses 'ae/f CoLuMm PLANoanAPn Co..wASluNuroN. D. c.

HARRY I. SHOTWIELL, OF WENATCHEE, WASHINGTON.

FISH-SCREEN.

Specification of Letters Patent Patented Dec. 2, 1911.3.

Application filed September 2, 1913. Serial No. 787,756.

To all whom t may concern:

Be it known that I, llMuiY l. Sno'rwnm'., a citizen o't` the United States, residing at ll'renatehee, in the county o't Chelan and State ot' lVashington7 have invented certain new and uset'ul Improvements in Fish- Screens; and l do hereby declare the following to be a full, clear7 and exact description ot the. invention, such as will enable others skilled in the art to which it appertains to make and use the same.

rlhis invention relates to tish screens and has 'for an object to provide a screen adapted for location at the head ot an irrigatingl ditch to prevent the passage of sh t'rom the feeding stream into such irrigating ditch and to present improved means for cl aring the screen oit' accumulated rubbish.

A further object of the invention is to provide a plurality of screens mounted on a revolving frame with improved means for changing the said screens to present the opposite side to the action oi" the current at each revolution.

Vith these and other objects in view the invention comprises certain novel constructions7 combinations and arrangement ot' parts as will be hereinafter more fully described and claimed.

In the drawings: Figure 1 is a View of the improved screen in side elevation. Fig. 2 is a view of the improved screen in end elevation. Fig. 3 is a sectional view through said screen taken on line 3 3 of F ig. 1. Fig. 11 is a perspective fragmentary view showing a means Jfor locking the screens in the rotating frame. Fig. 5 is a top plan view of the means for holding the rotating 'traine against rotation..

Like characters of reference designate corresponding parts throughout the several views.

The improved fish screen which forms the subject matter of this application is adapted to be located at the head of an irrigating ditch, the head being indicated in the drawing by the flume consisting of the side boards 10 and bottom boards l1, it being understood, however, that the particular form o't thune is immaterial to the present invention.

At the thune, posts 12 are erected in any approved manner depending upon the nature of the supporting structure, here shown as using an underlying cross-timber 13 and braces 141.-, it being understood, however, that these underlying timbers and braces may be varied as circumstances may make desirable.

Upon the posts 12 a shatt 15 is journaled tree to rotate and carrying hubs 1G. The hubs 1G carry a main frame consisting of arms 17 and cross bars 1S whereby a :tour sided rigid 'trame is produced as indicated more particularly at Fig. 8. It will be understood that this it'rame just described is all rigidly connected with the hubs 1G and rotates upon or with the shaft 15.

Upon the side bars 17 intermediate their ends shalts 1S) are journaled, said shal'ts rotating with the main frame and carrying screens 20. The screens 20 are mounted upon auxiliary trames 2l. which are rigidly carried by the shailts '15.) so that said screens upon said sha'lts are free to rotate with the main trame. The iframes 21. are locked yieldingly against rotation in the main "trame by means ot clips 22 seein-ed to said trames, the construction being shown particularly at Fig. Il; and with spring locked members 23 carried by the main t'rames and adapted to yieldingly engage said clips 22, such engagement being shown particularly at Fig. 4l.

rlhe shafts 19 carry pinions 24- rigidly secured thereto in position to engage segments 25 secured to the posts 12. The posts 12 are also provided with levers 26 pivoted at 27 as indicated at Fig. 5 with a tension spring 2S adapted to hold the said levers against the action ot the main :trame engaging upon the side indicated by the arrow in Fig. 5.

In operation it will be assumed that the flow of the water is in the direction indicated by the arrow at F ig. 3 and that it engages against the lowermost screen 20. The water will pass through the screen p 'actieally without hindrance until the accumulation of t'ash and extraneous matter upon the 11p-stream side of the screen renders the passage ot the water ditlicult whereupon the water will back up to a certain extent upon the 11p-stream side of said screen and exert a pressure against the said trash covered screen which will cause the main frame to rotate in the direction indicated by the large arrow in Fig. 2. Such rotation is resisted by the lever 2G and spring 2S which, however, will be overcome by the pressure of the water permitting such screen to rotate one quarter of a revolution until the next arm engages against the lever 26 whereupon the trame will be brought to a halt with the next screen in series in position to stop the passage of iisb. At the same time the pinions 19 of the upper screen will engage the segments 25 to cause a planetary rotation of the upper screen as indicated by the small arrow in Fig. 2 whereby the trash covered side on the screen which would otherwise be upward is turned down to pern mit the trash to fall oit and also to present the opposite side of the screen to the action of the water when it finally reaches the point of operation again to permit the passage ot the water to clean the screen. In other words7 each time a screen is presented Yto the action of the water it has been reversed so that the current tends to clean the screen which had been covered with trash upon the preceding operation.

The rotation of the auxiliary trames carrying the screens is resisted by the locking member 23 engaging the clip 22 but such locking means is yielding and as the main frame is rotated with considerable torce the torce is sutlicient to remove the clip 22 from engagement Fwith the lock 23 and the length of the segment is sufiicient to rotate the screen a complete halt revolution to bring the clip 9.2 at the opposite side ot' the screen into engagement with the lock. It will thus be seen that both t-he auxiliary trames and the main frame are locked yieldingly against rotation by spring actuated locks but of such nature that they are overcome by the torce exerted to permit the movement ot such trames in the directions indicated by their respective arrows.

While locks have been shown at Figs. 4- and 5 for locking the auxiliary frames and the main trame it is to be understood that such locks are only illustrative and that any yielding lock may be substituted therefor within the scope of the present invention.

claim:

l. in a fish screen, a main trame mounted to rotate; auxiliary iframes mounted for planetary rotation upon the main trame; means to hold the main frame yieldingly against rotation; and means for imparting movement to one oi the auxiliary iframes when the main traine is moved by the action ot the water.

2. In a fish screen, a main frame mounted to rotate; a plurality of screens mounted for planetary rotation upon the main frame; means to lock the main frame yieldingly against movement; means to lock the auxiliary trames yieldingly against movement; and means to rotate one of the auxiliary trames a half revolution at each quarter revo-lution of the main frame.

3.1n a fish screen, a main frame mounted to rotate; screens mounted for planetary rotation upon the main frame; means to lock the main frame yieldingly against movement; means to lock the screens against rotary movement; and means to rotate each of the screens a halt revolution at each complete revolution of the main frame.

4t. In a ish screen, a. rotating screen carrying trame; and means to reverse the screens at each presentation to the water.

5. ln a fish screen, a main frame provided with a plurality ot radially extending trame sections; a plurality or' auxiliary trames journaled in the radial frames; screens carried by the auxiliary trames; means to hold the auxiliary frames and screens in planes normally radial of the main frame; and means to reverse each ot' said auxiliary frames at each complete revolution of the main frame.

6. In a fish screen, a mainframe having a plurality of radial frame sections; auxiliary trames mounted in the radial sections and themselves normally positioned radially of the main frame; screens carried by the auxiliary frames; pinions carried axially by the auxiliary trames; a segment positioned in the path of movement of the pinions, said segment being proportioned to rotate the pinion a half revolution; means to hold the main frame yieldingly against movement; and means to hold the auxiliary frames yieldingly against movement..

7. A ish screen comprising screens each rotatable about its own axis and all rotatable about a common axis, and means to rotate each screen once during each revolution about the common axis.

In testimony whereof l atlix my signature in presence of two witnesses.

HARRY l. SHOTELL.

l/litnesses: y

G. lWARD KEMP, DAISY D. SHOTWELL.

Copies of this patent may 'be obtained for ve cents each, by addressing the Commissioner of Eatents. Washington, D. G. 

